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United States Patent | 5,529,281 |
Brudnicki ,   et al. | June 25, 1996 |
A tube-type shutoff valve is electrically positioned to its open or closed position by a concentric electromagnetic solenoid. The valve is dual latching in that the armature of the solenoid maintains the sliding tube of the valve in an open or closed position by means of permanent magnets which are effective when current is not supplied to the solenoid. The valve may also be actuated manually.
Inventors: | Brudnicki; Myron J. (San Pedro, CA); Yang; Jefferson Y. (Orange, CA) |
Assignee: | The United States of America as represented by the Administrator of (Washington, DC) |
Appl. No.: | 296551 |
Filed: | August 24, 1994 |
Current U.S. Class: | 251/129.03; 251/65; 251/129.1; 251/129.21 |
Intern'l Class: | F16K 031/08 |
Field of Search: | 251/129.03,129.15,129.21,129.02,129.01,65,129.1,129.09 |
2308285 | Jan., 1943 | Jeffrey et al. | 251/129. |
3502105 | Mar., 1970 | Ernyei et al. | 251/129. |
5351934 | Oct., 1994 | Jensen et al. | 251/65. |